Some turtles breathe through their butts.
Technically, turtles do not breathe through their derrières. That’s because turtles don’t really have “butts”; instead, they have a multipurpose opening known as a cloaca, which is used for sexual reproduction and egg laying as well as for expelling waste. However, they do engage in a process called cloacal respiration, which could, in a less technical sense, be interpreted as “butt breathing.”